diff options
Diffstat (limited to 'target/linux/atheros/files-2.6.28/arch/mips/atheros/ar5315/pci.c')
| -rw-r--r-- | target/linux/atheros/files-2.6.28/arch/mips/atheros/ar5315/pci.c | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/target/linux/atheros/files-2.6.28/arch/mips/atheros/ar5315/pci.c b/target/linux/atheros/files-2.6.28/arch/mips/atheros/ar5315/pci.c deleted file mode 100644 index 166fa1cf9..000000000 --- a/target/linux/atheros/files-2.6.28/arch/mips/atheros/ar5315/pci.c +++ /dev/null @@ -1,265 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/mm.h> -#include <linux/spinlock.h> -#include <linux/delay.h> -#include <linux/irq.h> -#include <asm/bootinfo.h> -#include <asm/paccess.h> -#include <asm/irq_cpu.h> -#include <asm/io.h> -#include "ar531x.h" - -#define AR531X_MEM_BASE 0x80800000UL -#define AR531X_MEM_SIZE 0x00ffffffUL -#define AR531X_IO_SIZE 0x00007fffUL -#define IDSEL_SHIFT 13 - -static spinlock_t ar531x_pci_lock = SPIN_LOCK_UNLOCKED; -static u32 cfgaddr; - -static int config_access(int busno, int dev, int func, int where, int size, u32 ptr, int write) -{ - u32 address; /* Address to read from */ - u32 reg; - unsigned long flags; - int ret = -1; - if ((busno != 0) || ((dev != 0) && (dev != 3)) || (func > 2)) - return ret; - - spin_lock_irqsave(&ar531x_pci_lock, flags); - - /* Select Configuration access */ - reg = sysRegRead(AR5315_PCI_MISC_CONFIG); - reg |= AR5315_PCIMISC_CFG_SEL; - sysRegWrite(AR5315_PCI_MISC_CONFIG, reg); - (void)sysRegRead(AR5315_PCI_MISC_CONFIG); - - address = (u32)cfgaddr + (1 << (IDSEL_SHIFT + dev)) + (func << 8) + where; - - if (size == 1) - address ^= 0x3; - else if (size == 2) - address ^= 0x2; - - if (write) { - if (size == 1) - ret = put_dbe(ptr, (u8 *) address); - else if (size == 2) - ret = put_dbe(ptr, (u16 *) address); - else if (size == 4) - ret = put_dbe(ptr, (u32 *) address); - } else { - if (size == 1) - ret = get_dbe(*((u32 *)ptr), (u8 *) address); - else if (size == 2) - ret = get_dbe(*((u32 *)ptr), (u16 *) address); - else if (size == 4) - ret = get_dbe(*((u32 *)ptr), (u32 *) address); - } - - /* Select Memory access */ - reg = sysRegRead(AR5315_PCI_MISC_CONFIG); - reg &= ~AR5315_PCIMISC_CFG_SEL; - sysRegWrite(AR5315_PCI_MISC_CONFIG, reg); - (void)sysRegRead(AR5315_PCI_MISC_CONFIG); - - spin_unlock_irqrestore(&ar531x_pci_lock, flags); - - if (ret) { - *((u32 *)ptr) = 0xffffffff; - return PCIBIOS_DEVICE_NOT_FOUND; - } - - return PCIBIOS_SUCCESSFUL; -} - -static int ar531x_pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * value) -{ - return config_access(bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), where, size, (u32) value, 0); -} - -static int ar531x_pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value) -{ - return config_access(bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn), where, size, value, 1); -} - -struct pci_ops ar531x_pci_ops = { - .read = ar531x_pci_read, - .write = ar531x_pci_write, -}; - -static struct resource ar531x_mem_resource = { - .name = "AR531x PCI MEM", - .start = AR531X_MEM_BASE, - .end = AR531X_MEM_BASE + AR531X_MEM_SIZE - AR531X_IO_SIZE - 1 + 0x4000000, - .flags = IORESOURCE_MEM, -}; - -static struct resource ar531x_io_resource = { - .name = "AR531x PCI I/O", - .start = AR531X_MEM_BASE + AR531X_MEM_SIZE - AR531X_IO_SIZE, - .end = AR531X_MEM_BASE + AR531X_MEM_SIZE - 1, - .flags = IORESOURCE_IO, -}; - -struct pci_controller ar531x_pci_controller = { - .pci_ops = &ar531x_pci_ops, - .mem_resource = &ar531x_mem_resource, - .io_resource = &ar531x_io_resource, - .mem_offset = 0x00000000UL, - .io_offset = 0x00000000UL, -}; - -int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) -{ - return AR5315_IRQ_LCBUS_PCI; -} - -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - u32 reg; - - pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 5); - pci_write_config_word(dev, 0x40, 0); - - /* Clear any pending Abort or external Interrupts - * and enable interrupt processing */ - reg = sysRegRead(AR5315_PCI_INTEN_REG); - reg &= ~AR5315_PCI_INT_ENABLE; - sysRegWrite(AR5315_PCI_INTEN_REG, reg); - - reg = sysRegRead(AR5315_PCI_INT_STATUS); - reg |= (AR5315_PCI_ABORT_INT | AR5315_PCI_EXT_INT); - sysRegWrite(AR5315_PCI_INT_STATUS, reg); - - reg = sysRegRead(AR5315_PCI_INT_MASK); - reg |= (AR5315_PCI_EXT_INT | AR5315_PCI_ABORT_INT); - sysRegWrite(AR5315_PCI_INT_MASK, reg); - - reg = sysRegRead(AR5315_PCI_INTEN_REG); - reg |= AR5315_PCI_INT_ENABLE; - sysRegWrite(AR5315_PCI_INTEN_REG, reg); - - return 0; -} - -static void ar5315_pci_fixup(struct pci_dev *dev) -{ - struct pci_bus *bus = dev->bus; - - if ((PCI_SLOT(dev->devfn) != 3) || (PCI_FUNC(dev->devfn) != 0) || (bus->number != 0)) - return; - -#define _DEV bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn) - printk("PCI: fixing up device %d,%d,%d\n", _DEV); - /* fix up mbars */ - config_access(_DEV, PCI_BASE_ADDRESS_0, 4, HOST_PCI_MBAR0, 1); - config_access(_DEV, PCI_BASE_ADDRESS_1, 4, HOST_PCI_MBAR1, 1); - config_access(_DEV, PCI_BASE_ADDRESS_2, 4, HOST_PCI_MBAR2, 1); - config_access(_DEV, PCI_COMMAND, 4, - PCI_COMMAND_MEMORY|PCI_COMMAND_MASTER|PCI_COMMAND_SPECIAL| - PCI_COMMAND_INVALIDATE|PCI_COMMAND_PARITY|PCI_COMMAND_SERR| - PCI_COMMAND_FAST_BACK, 1); -#undef _DEV -} -DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, ar5315_pci_fixup); - -int __init ar5315_pci_init(void) -{ - u32 reg; - - if (mips_machtype != MACH_ATHEROS_AR2315) - return -ENODEV; - - printk("AR531x PCI init... \n"); - - cfgaddr = (u32) ioremap_nocache(0x80000000, 1*1024*1024); /* Remap PCI config space */ - ar531x_pci_controller.io_map_base = - (unsigned long) ioremap_nocache(AR531X_MEM_BASE + AR531X_MEM_SIZE, AR531X_IO_SIZE); - set_io_port_base(ar531x_pci_controller.io_map_base); /* PCI I/O space */ - - reg = sysRegRead(AR5315_RESET); - sysRegWrite(AR5315_RESET, reg | AR5315_RESET_PCIDMA); - - udelay(10*1000); - - sysRegWrite(AR5315_RESET, reg & ~AR5315_RESET_PCIDMA); - sysRegRead(AR5315_RESET); /* read after */ - - udelay(10*1000); - - reg = sysRegRead(AR5315_ENDIAN_CTL); - reg |= AR5315_CONFIG_PCIAHB | AR5315_CONFIG_PCIAHB_BRIDGE; - - sysRegWrite(AR5315_ENDIAN_CTL, reg); - - reg = sysRegRead(AR5315_PCICLK); - reg = 4; - sysRegWrite(AR5315_PCICLK, reg); - - reg = sysRegRead(AR5315_AHB_ARB_CTL); - reg |= (ARB_PCI); - sysRegWrite(AR5315_AHB_ARB_CTL, reg); - - reg = sysRegRead(AR5315_IF_CTL); - reg &= ~(IF_PCI_CLK_MASK | IF_MASK); - reg |= (IF_PCI | IF_PCI_HOST | IF_PCI_INTR | (IF_PCI_CLK_OUTPUT_CLK << IF_PCI_CLK_SHIFT)); - - sysRegWrite(AR5315_IF_CTL, reg); - - /* Reset the PCI bus by setting bits 5-4 in PCI_MCFG */ - reg = sysRegRead(AR5315_PCI_MISC_CONFIG); - reg &= ~(AR5315_PCIMISC_RST_MODE); - reg |= AR5315_PCIRST_LOW; - sysRegWrite(AR5315_PCI_MISC_CONFIG, reg); - - /* wait for 100 ms */ - udelay(100*1000); - - /* Bring the PCI out of reset */ - reg = sysRegRead(AR5315_PCI_MISC_CONFIG); - reg &= ~(AR5315_PCIMISC_RST_MODE); - reg |= (AR5315_PCIRST_HIGH | AR5315_PCICACHE_DIS | 0x8); - sysRegWrite(AR5315_PCI_MISC_CONFIG, reg); - - sysRegWrite(AR5315_PCI_UNCACHE_CFG, - 0x1E | /* 1GB uncached */ - (1 << 5) | /* Enable uncached */ - (0x2 << 30) /* Base: 0x80000000 */ - ); - (void)sysRegRead(AR5315_PCI_UNCACHE_CFG); /* flush */ - - udelay(500*1000); - - /* dirty hack - anyone with a datasheet that knows the memory map ? */ - ioport_resource.start = 0x10000000; - ioport_resource.end = 0xffffffff; - iomem_resource.start = 0x10000000; - iomem_resource.end = 0xffffffff; - - register_pci_controller(&ar531x_pci_controller); - - printk("done\n"); - return 0; -} - -arch_initcall(ar5315_pci_init); |